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Patents Grantslast 30 patents

Information Patent Grant
Telescopic support caps, e.g. for use in mining
- Patent number 3,991,577
- Issue date Nov 16, 1976
- Heuilleres du Bassin de Lorraine
- Jean P. Thevenoux
- E21 - EARTH DRILLING MINING
Information Patent Grant
3312071
- Patent number 3,312,071
- Issue date Apr 4, 1967
- E21 - EARTH DRILLING MINING
Information Patent Grant
3240021
- Patent number 3,240,021
- Issue date Mar 15, 1966
- E21 - EARTH DRILLING MINING
Information Patent Grant
1483549
- Patent number 1,483,549
- Issue date Feb 12, 1924
- E21 - EARTH DRILLING MINING